Besiege application has white icon on Plank dock

[Cal]

Also occurs with Kerbal Space Program

Image: http://imgur.com/9oT1JBQ

ProblemType: Bug
DistroRelease: elementary OS 0.3
Package: elementary-desktop 1.362+406~ubuntu0.3.1 [origin: LP-PPA-elementary-os-daily]
ProcVersionSignature: Ubuntu 3.13.0-45.74-generic 3.13.11-ckt13
Uname: Linux 3.13.0-45-generic x86_64
NonfreeKernelModules: nvidia wl
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
CrashDB: elementary_meta
CurrentDesktop: Pantheon
Date: Sun Feb 22 11:05:33 2015
InstallationDate: Installed on 2015-02-22 (0 days ago)
InstallationMedia: elementary OS 0.3 "Freya" - Daily amd64 (20150208)
ProcEnviron:
 LANGUAGE=en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: elementary-meta
SuspiciousXErrors:

ThirdParty: True
UpgradeStatus: No upgrade log present (probably fresh install)